Out of the elements X and Y which has bigger atomic radius ? Give reason to justify your answer. (i) X has atomic number 18 and atomic mass 40.

Monjur Alahi

Out of the elements X and Y which has bigger atomic radius ? Give reason to justify your answer.

(i) X has atomic number 18 and atomic mass 40.

(ii) Y has atomic number 20 and atomic mass 40.


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Salim Ahmed Kawsar

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Radius of Y is bigger than that of X.  

In 'X' the number of shells is three while in Y it is four.

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